E-mails proposing an "urgent business relationship" help make fraud Nigeria's largest source of foreign revenue after oil. But scams are also a central part of Nigeria's domestic cultural landscape. Corruption is so widespread in Nigeria that its citizens call it simply "the Nigerian factor." Willing or unwilling participants in corruption at every turn, Nigerians are deeply ambivalent about it--resigning themselves to it, justifying it, or complaining about it. They are painfully aware of the damage corruption does to their country and see themselves as their own worst enemies, but they...